Home / 87,930.60-121,344.04-47,645.45

Finding the Fourth Proportional to 87,930.60, 121,344.04 and 47,645.45

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Solution

The fourth proportional to 87,930.60, 121,344.04 and 47,645.45 is: 65,750.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,930.60 : 121,344.04 = 47,645.45 : x
  2. Step 2: Convert to fraction form
    87,930.60/121,344.04 = 47,645.45/x
  3. Step 3: Cross multiply
    87,930.60x = 121,344.04 × 47,645.45
  4. Step 4: Simplify right side
    87,930.60x = 5,781,491,390.62
  5. Step 5: Solve for x
    x = 5,781,491,390.62/87,930.60
  6. Step 6: Final answer
    x = 65,750.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.